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tdemultimedia/krec/mp3_export/krecexport_mp3.cpp

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/***************************************************************************
copyright : (C) 2003 by Arnold Krille
email : arnold@arnoldarts.de
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; version 2 of the License. *
* *
***************************************************************************/
#include "krecexport_mp3.h"
#include "krecexport_mp3.moc"
#include "krecglobal.h"
#include <kdebug.h>
#include <tdetempfile.h>
#include <tqfile.h>
#include <tqtimer.h>
#include <kgenericfactory.h>
#include <stdlib.h>
#include <time.h>
#include <tqdatetime.h>
#include <tdemessagebox.h>
#include <tdeconfig.h>
#include <tdemessagebox.h>
// Error code definitions from lame.h
static const char *lame_error[] =
{
I18N_NOOP( "Unknown encoding error." ),
I18N_NOOP( "Buffer was too small." ),
I18N_NOOP( "Memory allocation problem." ),
I18N_NOOP( "Parameter initialisation not performed." ),
I18N_NOOP( "Psycho acoustic problems." ),
I18N_NOOP( "OGG cleanup encoding error." ),
I18N_NOOP( "OGG frame encoding error" )
};
K_EXPORT_COMPONENT_FACTORY( libkrecexport_mp3, KGenericFactory<KRecExport_MP3> )
KRecExport_MP3 krecExportMP3( 0 );
KRecExport_MP3::KRecExport_MP3( TQObject* p, const char* n, const TQStringList& )
: KRecExportItem( p,n )
, _file( 0 )
, error_occurred( false )
, init_done( false )
{
kdDebug( 60005 ) << k_funcinfo << endl;
registerAtGlobal( this );
kdDebug( 60005 ) << "Registered Exports: " << KRecGlobal::the()->exportFormats() << endl;
}
KRecExport_MP3::~KRecExport_MP3() {
kdDebug( 60005 ) << k_funcinfo << endl;
}
KRecExport_MP3* KRecExport_MP3::newItem() {
kdDebug( 60005 ) << k_funcinfo << endl;
return new KRecExport_MP3( 0 );
}
TQStringList KRecExport_MP3::extensions() {
//kdDebug( 60005 ) << k_funcinfo << endl;
TQStringList tmp;
tmp << "*.wav" << "*.WAV";
return tmp;
}
bool KRecExport_MP3::initialize( const TQString &filename ) {
kdDebug( 60005 ) << k_funcinfo << endl;
if ( !_file &&
!( bits()!=16 && channels()!=2 &&
KMessageBox::warningContinueCancel( KRecGlobal::the()->mainWidget(),
i18n( "At this time MP3-Export only supports files in stereo and 16bit." )
) == KMessageBox::Cancel
)
) {
KMessageBox::information( KRecGlobal::the()->mainWidget(),
i18n( "Please note that this plugin takes its qualitysettings from" \
" the corresponding section of the Audio CDs Control Center module" \
" configuration. Make use" \
" of the Control Center to configure these settings." ),
i18n( "Quality Configuration" ), "qualityinfo_mp3" );
_file = new TQFile( filename );
if ( _file->open( IO_Raw|IO_WriteOnly ) ) {
if ( ! init_done ) {
gfp = lame_init();
setLameParameters();
if ( write_id3 ) {
id3tag_init( gfp );
id3tag_v1_only ( gfp );
id3tag_set_album ( gfp, "" );
id3tag_set_artist ( gfp, "" );
id3tag_set_title ( gfp, "" );
id3tag_set_comment( gfp, "krec" );
}
/// Set input parameters right
lame_set_in_samplerate( gfp, this->samplingRate() );
lame_set_num_channels( gfp, this->channels() );
lame_init_params( gfp );
}
if ( _file->size() >= 128 )
_file->at( _file->size() - 128 );
else
_file->at( _file->size() );
} else return false;
return true;
} else return false;
}
bool KRecExport_MP3::process() {
//kdDebug( 60005 ) << k_funcinfo << running << endl;
if ( _file ) {
if ( running() ) {
TQByteArray bytearray( 4096 );
emit getData( bytearray );
int mp3bytes = lame_encode_buffer_interleaved( gfp,
reinterpret_cast<short int *>( bytearray.data() ),
bytearray.size() >> 2, mp3buf, sizeof( mp3buf ) );
if ( mp3bytes > 0 )
_file->writeBlock( reinterpret_cast<char *>( mp3buf ), mp3bytes );
if ( mp3bytes < 0 && ! error_occurred ) {
int code = ( mp3bytes < -6 ) ? 0 : -mp3bytes;
KMessageBox::detailedError( 0, i18n( "MP3 encoding error." ),
i18n( lame_error[ code ] ) );
error_occurred = true;
}
TQTimer::singleShot( 10, this, TQT_SLOT( process() ) );
}
return true;
} else return false;
}
bool KRecExport_MP3::finalize() {
kdDebug( 60005 ) << k_funcinfo << endl;
if ( _file ) {
int mp3bytes = lame_encode_flush( gfp, mp3buf, sizeof( mp3buf ) );
if ( mp3bytes > 0 )
_file->writeBlock( reinterpret_cast<char *>( mp3buf ), mp3bytes );
if ( mp3bytes < 0 && ! error_occurred ) {
int code = ( mp3bytes < -6 ) ? 0 : -mp3bytes;
KMessageBox::detailedError( 0, i18n( "MP3 encoding error." ),
i18n( lame_error[ code ] ) );
error_occurred = true;
}
lame_close( gfp );
_file->close();
delete _file;
_file = 0;
return true;
} else return false;
}
// Derived from tdemultimedia/tdeioslave/audiocd/audiocd.cpp.
// We use the encoding settings from kcmaudiocd.
void KRecExport_MP3::setLameParameters() {
TDEConfig *config;
config = new TDEConfig( "kcmaudiocdrc" );
config->setGroup( "MP3" );
int quality = config->readNumEntry( "quality",2 );
if ( quality < 0 ) quality = 0;
if ( quality > 9 ) quality = 9;
int method = config->readNumEntry( "encmethod",0 );
if ( method == 0 ) {
// Constant Bitrate Encoding
lame_set_VBR( gfp, vbr_off );
lame_set_brate( gfp,config->readNumEntry( "cbrbitrate",160 ) );
lame_set_quality( gfp, quality );
} else {
// Variable Bitrate Encoding
if ( config->readBoolEntry( "set_vbr_avr",true ) ) {
lame_set_VBR( gfp,vbr_abr );
lame_set_VBR_mean_bitrate_kbps( gfp,
config->readNumEntry( "vbr_average_bitrate",0 ) );
} else {
if ( lame_get_VBR( gfp ) == vbr_off ) lame_set_VBR( gfp, vbr_default );
if ( config->readBoolEntry( "set_vbr_min",true ) )
lame_set_VBR_min_bitrate_kbps( gfp,
config->readNumEntry( "vbr_min_bitrate",0 ) );
if ( config->readBoolEntry( "vbr_min_hard",true ) )
lame_set_VBR_hard_min( gfp, 1 );
if ( config->readBoolEntry( "set_vbr_max",true ) )
lame_set_VBR_max_bitrate_kbps( gfp,
config->readNumEntry( "vbr_max_bitrate",0 ) );
lame_set_VBR_q( gfp, quality );
}
if ( config->readBoolEntry( "write_xing_tag",true ) )
lame_set_bWriteVbrTag( gfp, 1 );
}
switch ( config->readNumEntry( "mode",0 ) ) {
case 0: lame_set_mode( gfp, STEREO ); break;
case 1: lame_set_mode( gfp, JOINT_STEREO ); break;
case 2: lame_set_mode( gfp, DUAL_CHANNEL ); break;
case 3: lame_set_mode( gfp, MONO ); break;
default: lame_set_mode( gfp,STEREO ); break;
}
lame_set_copyright( gfp, config->readBoolEntry( "copyright",false ) );
lame_set_original( gfp, config->readBoolEntry( "original",true ) );
lame_set_strict_ISO( gfp, config->readBoolEntry( "iso",false ) );
lame_set_error_protection( gfp, config->readBoolEntry( "crc",false ) );
write_id3 = config->readBoolEntry( "id3",true );
if ( config->readBoolEntry( "enable_lowpassfilter",false ) ) {
lame_set_lowpassfreq( gfp,
config->readNumEntry( "lowpassfilter_freq",0 ) );
if ( config->readBoolEntry( "set_lowpassfilter_width",false ) )
lame_set_lowpasswidth( gfp,
config->readNumEntry( "lowpassfilter_width",0 ) );
}
if ( config->readBoolEntry( "enable_highpassfilter",false ) ) {
lame_set_highpassfreq( gfp,
config->readNumEntry( "highpassfilter_freq",0 ) );
if ( config->readBoolEntry( "set_highpassfilter_width",false ) )
lame_set_highpasswidth( gfp,
config->readNumEntry( "highpassfilter_width",0 ) );
}
delete config;
}
// vim:sw=4:ts=4
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